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The Glenwood formation experiment was a bust at least as far as a hone goes. It is way to soft. I did try a slurry from it on my C12kand that was interesting enough for me to try again. I did get in...

Today on another walk I found the Glenwood formation!

I had a hard time getting a big enough piece for a hone. I lapped 2. They are very soft and brittle. The larger one you can see I lapped...

Just below her left foot and a little to the right looks like a good hone size rectangle!:rofl2:

I did a search and it looks like it wouldn't be to hard to get a hone size piece. It is not real close but certainly in range.

Thanks, Tim

60 micron film and about 1.5 hours of elbow grease. This was the smoother side and the other had that nice looking rind on it. I should have cut it smooth at first but it would have took me longer to...

1. Testing Hardness of a Mineral

It is sort of translucent when wet. It has a hardness about 4 on the Mohs scale. Comparing to my C-12k with a hardness of less than 3.

My wife and I were out today checking out among other things the geology of the Mississippi river valley. I found a couple of neat pieces of stone and decided to make a hone. I was hoping to find the...